<template>
  <view class="product-list">
    <!--顶部搜索导航栏-->
    <rf-search-bar
        @link="navToIndex"
        @search="handleSearchProductList"
        :icon="'iconxiatubiao--copy'"
        :title="'主页'"
        :inputDisabled="true"
        :headerShow="headerShow"
        :placeholder="hotSearchDefault"/>
    <!--分类栏目-->
    <view v-if="isShowNavBar" class="navbar" :style="{top: navBarTop}">
      <view class="nav-item" :class="{current: filterIndex === 0}" @tap="tabClick(0)">
        综合排序
      </view>
      <view class="nav-item" :class="{current: filterIndex === 1}" @tap="tabClick(1)">
        <text>销量</text>
        <view class="p-box">
          <i :class="{active: salesOrder === 1 && filterIndex === 1}" class="iconfont iconshang"></i>
          <i :class="{active: salesOrder === 2 && filterIndex === 1}" class="iconfont iconshang xia"></i>
        </view>
      </view>
      <view class="nav-item" :class="{current: filterIndex === 2}" @tap="tabClick(2)">
        浏览量
      </view>
      <view class="nav-item" :class="{current: filterIndex === 3}" @tap="tabClick(3)">
        收藏
      </view>
      <view class="nav-item" :class="{current: filterIndex === 4}" @tap="tabClick(4)">
        <text>价格</text>
        <view class="p-box">
          <i :class="{active: priceOrder === 1 && filterIndex === 4}" class="iconfont iconshang"></i>
          <i :class="{active: priceOrder === 2 && filterIndex === 4}" class="iconfont iconshang xia"></i>
        </view>
      </view>
      <i class="cate-item iconfont iconfenlei1" @tap="toggleCateMask('show')"></i>
    </view>
    <!--商品列表-->
    <view class="rf-product-list" :style="{marginTop: contentTop}" v-if="goodsList.length > 0">
      <view
          v-for="(item, index) in goodsList" :key="index"
          class="product-item"
          @tap="navTo(`/pages/product/product?id=${item.id}`)"
      >
        <view class="image-wrapper">
          <image :src="item.picture" mode="aspectFill"></image>
        </view>
        <text class="title clamp in2line" v-if="item.name">{{item.name}}</text>
        <view class="last-line" v-if="item.name">
          <text class="price in1line">{{item.price}}
            <text class="m-price" v-if="item.market_price > item.price">¥ {{ item.market_price }}</text>
          </text>
          <text class="sales in1line">
            <text class="red">{{ item.sales }}</text>
            付款
          </text>
        </view>
      </view>
    </view>
    <rf-load-more :status="loadingType" v-if="goodsList.length > 0"></rf-load-more>
    <rf-empty :info="errorInfo || '该分类暂无商品'" v-if="goodsList.length === 0 && !loading"></rf-empty>
    <!--分类遮盖层-->
    <view class="cate-mask"
          :class="cateMaskState===0 ? 'none' : cateMaskState===1 ? 'show' : ''"
          @tap="toggleCateMask">
      <view class="cate-content" @tap.stop.prevent="stopPrevent" @touchmove.stop.prevent="stopPrevent">
        <scroll-view scroll-y class="cate-list">
          <view v-for="item in cateList" :key="item.id">
            <view class="cate-item one" @tap.stop="changeCate(item.id)">{{item.title}}</view>
            <view
                v-for="sItem in item.child" :key="sItem.id"
                class="cate-item two"
                :class="{active: sItem.id==cateId}"
                @tap.stop="changeCate(sItem.id)">
              {{sItem.title}}
              <view
                  v-for="tItem in sItem.child" :key="tItem.id"
                  class="cate-item three"
                  :class="{active: tItem.id==cateId}"
                  @tap.stop="changeCate(tItem.id)">
                {{tItem.title}}
              </view>
            </view>
          </view>
        </scroll-view>
      </view>
    </view>
    <!--页面加载动画-->
    <rf-loading v-if="loading"></rf-loading>
  </view>
</template>

<script>
	import {guessYouLikeList, productCate, productList} from "@/api/product";
	import rfLoadMore from '@/components/rf-load-more/rf-load-more';
	import rfRecommend from '@/components/rf-recommend/rf-recommend';
	import rfSearchBar from '@/components/rf-search-bar/rf-search-bar';

	export default {
		components: {
			rfLoadMore,
			rfSearchBar,
			rfRecommend,
		},
		data() {
			return {
				loading: true,  // 加载动画
				headerShow: true,
				navBarTop: "0px",
				cateMaskState: 0, //分类面板展开状态
				headerPosition: "fixed",
				headerTop: "0px",
				loadingType: 'more', //加载更多状态
				filterIndex: 0,
				cateId: 0, //已选三级分类id
				priceOrder: 0, //1 价格从低到高 2价格从高到低
				salesOrder: 0, //1 价格从低到高 2价格从高到低
				cateList: [],
				goodsList: [],  // 商品列表
				keyword: null,  // 搜索关键字
				cateParams: null,
				page: 1,
				filterParams: {},
				isShowNavBar: true,
				hotSearchDefault: '请输入关键字',
				contentTop: '88upx',
        errorInfo: undefined, // 接口请求出错信息
			};
		},
		onLoad(options) {
			this.initData(options);
		},
		onShow() {
			if (navigator) {
				this.headerTop = document.getElementsByTagName('uni-page-head')[0] && document.getElementsByTagName('uni-page-head')[0].offsetHeight + 'px';
			}
		},
		onPageScroll(e) {
			//兼容iOS端下拉时顶部漂移
			if (e.scrollTop >= 0) {
				this.headerPosition = "fixed";
			} else {
				this.headerPosition = "absolute";
			}
		},
		//下拉刷新
		onPullDownRefresh() {
			this.filterParams = {};
			this.page = 1;
			this.goodsList = [];
			this.getProductList('refresh');
		},
		//加载更多
		onReachBottom() {
			this.page++;
			this.getProductList();
		},
		methods: {
			// 初始化数据
			initData(options) {
				if (navigator) {
					this.headerTop = document.getElementsByTagName('uni-page-head')[0] && document.getElementsByTagName('uni-page-head')[0].offsetHeight + 'px';
				}
				/*  #ifdef APP-PLUS  */
				switch (uni.getSystemInfoSync().platform) {
					case 'android':
						this.navBarTop = '118upx';
						break;
					case 'ios':
						this.navBarTop = '188upx';
						break;
				}
				/*  #endif  */
				/*  #ifndef APP-PLUS  */
				this.navBarTop = '88upx';
				/*  #endif  */
				this.cateId = options.cate_id;
				if (options.params) {
					this.cateParams = JSON.parse(options.params);
					if (this.cateParams.guessYouLike === 1) {
						this.isShowNavBar = false;
						this.contentTop = '18upx';
						this.getGuessYouLikeList();
						return;
					}
				}
				this.keyword = options.keyword;
				this.hotSearchDefault = options.keyword;
				if (!this.keyword) {
					this.hotSearchDefault = uni.getStorageSync('hotSearchDefault')
				}
				this.getProductList();
			},
      // 搜索商品列表
			handleSearchProductList(e) {
				this.keyword = e.searchValue;
				this.page = 1;
				this.goodsList = [];
				this.filterParams = {};
				this.getProductList();
			},
      // 跳转至主页
			navToIndex() {
				uni.reLaunch({
					url: `/pages/index/index`
				})
			},
			// 获取商品列表
			async getProductList(type) {
				let params = {}
				if (this.keyword) {
					params.keyword = this.keyword
				} else if (this.cateId) {
					params.cate_id = this.cateId
				} else if (this.cateParams) {
					params = {...this.cateParams}
				}
				params.page = this.page;
				await this.$get(`${productList}`, {
					...params,
					...this.filterParams
				}).then(r => {
          this.loading = false;
					this.getProductCate();
					if (type === 'refresh'){
            uni.stopPullDownRefresh();
					}
					this.loadingType = r.data.length === 10 ? 'more' : 'nomore';
					this.goodsList = [...this.goodsList, ...r.data];
				}).catch(err => {
					this.errorInfo = err;
					this.goodsList = [];
          this.loading = false;
					if (type === 'refresh') {
						uni.stopPullDownRefresh();
					}
				});
			},
			async getGuessYouLikeList() {
				await this.$get(`${guessYouLikeList}`, {}).then(r => {
					this.loadingType = r.data.length === 10 ? 'more' : 'nomore';
					this.goodsList = [...this.goodsList, ...r.data];
				}).catch((err) => {
					console.log(err)
				});
			},
			// 获取商品分类
			async getProductCate() {
				await this.$get(`${productCate}`).then(r => {
					this.cateList = r.data
					this.cateList.unshift({
						title: '全部商品',
						id: ''
					})
				})
			},
			//筛选点击
			tabClick(index) {
				this.filterParams = {}
				if (this.filterIndex === index && index !== 4 && index !== 1) {
					return;
				}
				this.filterIndex = index;
				if (index === 0) {
					this.filterParams = {}
				} else if (index === 1) {
					if (this.salesOrder === 1) {
						this.filterParams.sales = 'desc'
						this.salesOrder = 2;
					} else {
						this.filterParams.sales = 'asc'
						this.salesOrder = 1;
					}
				} else if (index === 2) {
					this.filterParams.view = 'desc';
				} else if (index === 3) {
					this.filterParams.collect = 'desc';
				} else if (index === 4) {
					if (this.priceOrder === 1) {
						this.filterParams.price = 'desc'
						this.priceOrder = 2;
					} else {
						this.filterParams.price = 'asc'
						this.priceOrder = 1;
					}
				}
				uni.pageScrollTo({
					duration: 300,
					scrollTop: 0
				})
				this.page = 1;
				this.goodsList.length = 0;
        this.loading = true;
				this.getProductList();
			},
			//显示分类面板
			toggleCateMask(type) {
				let timer = type === 'show' ? 10 : 300;
				let state = type === 'show' ? 1 : 0;
				this.cateMaskState = 2;
				setTimeout(() => {
					this.cateMaskState = state;
				}, timer)
			},
			//分类点击
			changeCate(id) {
				if (!id) {
					this.cateParams = null;
					this.cateId = null;
					this.keyword = null;
				}
				this.cateId = id;
				this.keyword = undefined;
				this.toggleCateMask();
				uni.pageScrollTo({
					duration: 300,
					scrollTop: 0
				})
				this.page = 1;
				this.goodsList.length = 0;
				this.filterParams = {};
        this.loading = true;
				this.getProductList('refresh');
			},
			//跳转详情
			navTo(url) {
				uni.navigateTo({
					url
				})
			},
			stopPrevent() {
			}
		},
	}
</script>

<style lang="scss">
  page {
    background: $page-color-white;
  }

  .product-list {
    .navbar {
      position: fixed;
      left: 0;
      /*top: var(--window-top);*/
      display: flex;
      width: 100%;
      height: 80upx;
      background: #fff;
      box-shadow: 0 2upx 10upx rgba(0, 0, 0, .06);
      z-index: 10;

      .nav-item {
        flex: 1;
        display: flex;
        justify-content: center;
        align-items: center;
        height: 100%;
        font-size: 30upx;
        color: $font-color-dark;
        position: relative;

        &.current {
          color: $base-color;

          &:after {
            content: '';
            position: absolute;
            left: 50%;
            bottom: 0;
            transform: translateX(-50%);
            width: 120upx;
            height: 0;
            border-bottom: 4upx solid $base-color;
          }
        }
      }

      .p-box {
        display: flex;
        flex-direction: column;

        .iconfont {
          display: flex;
          align-items: center;
          justify-content: center;
          width: 30upx;
          height: 14upx;
          line-height: 1;
          margin-left: 4upx;
          font-size: 26upx;
          color: #888;

          &.active {
            color: $base-color;
          }
        }

        .xia {
          transform: scaleY(-1);
        }
      }

      .cate-item {
        display: flex;
        justify-content: center;
        align-items: center;
        height: 100%;
        width: 80upx;
        position: relative;
        font-size: 44upx;

        &:after {
          content: '';
          position: absolute;
          left: 0;
          top: 50%;
          transform: translateY(-50%);
          border-left: 1px solid #ddd;
          width: 0;
          height: 36upx;
        }
      }
    }

    /* 分类 */
    .cate-mask {
      position: fixed;
      left: 0;
      top: 40px;
      bottom: 0;
      width: 100%;
      background: rgba(0, 0, 0, 0);
      z-index: 95;
      transition: .3s;

      .cate-content {
        width: 630upx;
        height: 100%;
        background: #fff;
        float: right;
        transform: translateX(100%);
        transition: .3s;
      }

      &.none {
        display: none;
      }

      &.show {
        background: rgba(0, 0, 0, .4);

        .cate-content {
          transform: translateX(0);
        }
      }

      .cate-list {
        display: flex;
        flex-direction: column;
        height: 100%;

        .cate-item {
          display: flex;
          align-items: center;
          height: 70upx;
          padding-left: 30upx;
          font-size: 30upx;
          position: relative;
          color: $font-color-dark;
        }

        .one {
          background: #eee;
        }

        .two {
          background: #f8f8f8;
          color: $font-color-base;
          height: 60upx;
          font-size: 28upx;
          padding-left: 50upx;
        }

        .three {
          font-size: 26upx;
          color: $font-color-base;
        }

        .active {
          color: $base-color;
        }
      }
    }
  }
</style>
